I recently purchased a pixhawk from unmanned tech, this is one produced by them as a clone, while they claim it works the same if not with better components.

Upon receiving the pixhawk i downloaded the arduplane firmware to the board, after i try to connect with mission planner and i always get a timeout, while the pixhawk shows a solid red light.

The com port shows up as a selectable option on mission planner and when i connect to it via terminal i get the usual boot sequence information.

I checked the log on the memory card and it says something along the lines of “no px4io board found”.

I have tried;

formating the memory card and trying with that
-different firmwares, i.e coptor
-i have tried the reset buttons on the sides of the pixhawk
-i have borrowed a 3DR brand pixhawk which works perfectly fine

The Board seems to be fine in terms of hardware, the only issue being not being able to connect with mission planner.

Firstly can you unplug everything from your pixhawk except for the buzzer and safety switch just incase.

Then can you hold in the safety switch while plugging the in USB as this will for the pixhawk into bootloader mode and will then try to force update the PX4 FMU firmware. After a minute or two the beeps should stop and you can reboot your pixhawk.